Taxonomy of Podoscirtinae (Orthoptera: Gryllidae). Part 4: African Podoscirtini and geography of the tribe

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1 Zoological Institute, St.Petersburg, 2005 Taxonomy of Podoscirtinae (Orthoptera: Gryllidae). Part 4: African Podoscirtini and geography of the tribe A.V. Gorochov Gorochov, A.V Taxonomy of Podoscirtinae (Orthoptera: Gryllidae). Part 4: African Podoscirtini and geography of the tribe. Zoosystematica Rossica, 13(2), 2004: Eight genera belonging to a generic group with the modified male genitalia (similar to those of the Indo-Malayan genus Truljalia) are characterized. They are distributed only in Africa south of Sahara. Four new genera, 13 new species, and unknown male of one species are described; some other African genera and species are considered (i.e., type material is revised, a lectotype for Dolichogryllus camerunensis Bol. is designated, and information on the systematic position of some forms is given). The distribution of the Podoscirtini genera is considered; 7-8 regions with almost endemic generic composition are outlined. Preliminary hypotheses for the origin of the Podoscirtini faunas of these regions are proposed. New replacement names (Valiatrella, nom. n. and Stenotrella, nom. n.) are proposed for the genera Valia Gorochov, 1985 (non Alexeev, 1979) and Stenogryllodes Chopard, 1952 (non Chopard, 1936), respectively. A.V. Gorochov, Zoological Institute, Russian Academy of Sciences, Universitetskaya nab. 1, St.Petersburg , Russia. The fourth part in the series of papers on taxonomy of the Podoscirtinae includes a partial revision of African Podoscirtini having the characteristically modified male genitalia, a brief review of African Podoscirtinae with unknown structure of the male genitalia, and a discussion about regularities of the generic distribution of Podoscirtini. The first, second, and third parts included a brief review of morphology and nomenclature of the male genitalia, a review of Indo-Malayan Podoscirtini, new data on taxonomy of Australo-Oceanian Podoscirtini, and a partial revision of Podoscirtini from Madagascar and the nearest regions including two genera known from Africa and belonging to a generic group characterized by the primitive male genitalia (Gorochov, 2002, 2003, 2004). SYSTEMATIC PART The material considered here is deposited at the following institutions: Zoological Institute, Russian Academy of Sciences, St.Petersburg (ZIAS); Natural History Museum, London (BMNH); Museum für Naturkunde der Humboldt-Universität, Berlin (MNHU); Museo Nacional de Ciencias Naturales, Madrid (MNCN); Museum and Institute of Zoology, Polish Academy of Sciences, Warszawa (MIZP). DOLICHOGRYLLUS GENERIC GROUP This group is characterized by a distinctly modified type of the male genitalia which is present in the Indo-Malayan genus Truljalia Gor. (for comparison see Figs I: 1-5): the epiphallus is divided into the upper lobe (provided with a pair of hooks or small hook-like projections) and a pair of lateral (lower) lobes forming the long and comparatively narrow distal processes (epiphallic ectoparameres) more or less separated from their bases; the guiding rod is very large (not smaller or hardly smaller than epiphallus); the rami are rather short (Figs I: 3-6; V; VI; XI: 1-6; XII). Some of these characters (division of the epiphallus into 3 lobes and large size of the guiding rod) are present also in the Indo-Malayan genus Madasumma Walk. (Figs I: 7-9). The hypothesis for the homology of the hooks of upper epiphallic lobe in Truljalia with lateral epiphallic lobes in Madasumma (Gorochov, 2002: Figs XIII: 1, 3, 5) is probably erroneous. However, the similarity of Dolichogryllus generic group and Truljalia in structure of the male genitalia is much greater, but there are some distinctions (see Figs I: 1-5): in Dolichogryllus generic group, upper epiphallic lobe bears a small apical notch or has no notch, the hooks of this lobe are not large and situated in its apical part,

2 182 A.V. Gorochov: Taxonomy of Podoscirtinae. Part 4 ZOOSYST. ROSSICA Vol. 13 lateral epiphallic lobes are fused or almost fused with their bases, and the guiding rod is more or less movable; in Truljalia, upper epiphallic lobe has a distinct apical notch, the hooks of this lobe are large and situated in more proximal parts, lateral epiphallic lobes are distinctly articulated with their bases, and the guiding rod is immovable. Probably, all above-considered taxa form a holophyletic group which first divided into the branch of Madasumma and the general stock of all other known genera; possibly, this stock had divided into Truljalia and Dolichogryllus generic group earlier than the differentiation occurred in the latter group. Genus Dolichogryllus Bolívar, 1910 Type species: Dolichogryllus camerunensis Bolívar, Note. The genus is characterized by the following characters: the body is weakly depressed dorsoventrally; the rostrum of head is not acuteangled in profile; the ocelli are developed but not large; the pronotum is rather short, without dorsal folds (Figs II: 2, 3); fore tibiae are inflated in the tympanal part; the tympana are well developed: outer one is open and oval, inner one is slit-like, but more or less widened (Fig. II: 4); the male metanotal gland is well developed, consists of a large cavity provided with a reversed V-shaped ridge (Fig. II: 6); the wings are long, with well-developed stridulatory apparatus in male (Fig. II: 5); the male anal and genital plates are simple, but the latter is rather long, supplied with bifurcated apex (Figs II: 7-9); the male genitalia are with moderately large hooks of upper epiphallic lobe, narrow bases of lateral epiphallic lobes (especially near the epiphallic ectoparameres), and paired sclerotized processes of guiding rod (second ectoparameres) (Figs I: 3-5). Included species. Type species and, possibly, Dolichogryllus infuscatus Chopard, 1967 from Congo (Figs I: 6; II: 1). Females of both the species are unknown. Dolichogryllus camerunensis Bolívar, 1910 (Figs I: 3-5; II: 2-9) Lectotype (present designation). M, Cameroon, Kamerun, L. Conradt, , Dolichogryllus camerunensis Bol., Sintipo (MNCN). Paralectotype (present designation). M, with same data as for lectotype (MNCN). Note. The coloration of lectotype is brown, more or less spotted (spots from light brown to dark brown): the head and pronotum are as in Fig. II: 2, 3; legs are darker at apices (middle and hind femora), as well as near bases (hind tibiae); the tegmina are with dorsal part as in Fig. II: 5, lateral parts more uniformly light brown, and tegminal bend marked by a dark brown interrupted stripe; other parts of body is more or less unicolourous, rather light. Other characters of the lectotype are given in Figs I: 3-5 and II: 4-9. The paralectotype is slightly lighter, with less distinct darkish spots on the rostrum and vertex. D. camerunensis is easily distinguished from D. infuscatus by the coloration of vertex and the size of tegminal mirror (for comparison, see Figs II: 1, 2, 5). Length (mm). Body 16-17; body with wings 21-23; pronotum ; tegmina ; hind femora Genus Afrotruljalia gen. n. Type species: Dolichogryllus tshetyrkinae Gorochov, Diagnosis. Similar to Dolichogryllus, but distinguished by following characters: head rostrum more or less acute-angled in profile; ocelli developed, not large, sometimes median ocellus absent; pronotum slightly or distinctly more elongate, with characteristic dorsal fold (Figs III; VIII: 11, 12); fore tibiae slightly inflated in tympanal part; inner tympanum widened or narrow (Figs IV: 2, 5, 7, 9, 16, 17); male metanotal gland strongly reduced (Fig. IV: 13) or absent; male genitalia (Figs V; VI: 1-3) with small hook-like projections of upper epiphallic lobe, bases of lateral epiphallic lobes widened near epiphallic ectoparameres (these bases almost triangular), and a pair of longitudinal sclerotized stripes on ventral surface of guiding rod (but this rod without sclerotized processes and sometimes with a pair of inner sclerotized plates; these plates may be bent laterally during erection) (Figs V: 2, 10, 18; VI: 2). Ovipositor long, with drilling apex (Fig. IV: 20). Composition. This genus is divided into 3 groups. The first group includes 5 species: type species; Dolichogryllus griseus Chopard, 1932; D. ethiopicus Gorochov, 1990; Afrotruljalia pulla sp. n.; A. kevani sp. n. They are characterized by the male genitalia with finger-like epiphallic ectoparameres and rather short guiding rod, which is narrow in rest position and provided with the sclerotized plates (Figs V: 1-16). The second group includes 3 species: D. corticeus Chopard, 1934; A. sordidula sp. n.; A. uvarovi sp. n. This group is distinguished from the first one by the thin and hooked apices of epiphallic ectoparameres and the longer guiding rod widened in rest position and bearing no sclerotized plates (Figs V: 17-19). The third group includes only A. magnifica sp. n., which differs from all the other species of this genus in the bifurcated epiphallic ectoparameres and the guiding rod more similar to that of the first group (Figs VI: 1-3).

3 ZOOSYST. ROSSICA Vol. 13 A.V. Gorochov: Taxonomy of Podoscirtinae. Part Figs I (1-9). Truljalia, Dolichogryllus and Madasumma, male. 1, 2, T. citri (B.-Bien.); 3-5, D. camerunensis Bol. (lectotype); 6, D. infuscatus Chop. (from Chopard, 1967); 7, M. plana Walk.; 8, 9, M. ventralis Walk. Genitalia from above (1, 3, 7, 8), from side (2, 5, 6, 9), and from below (4). Abbreviations: pe, proximal or upper epiphallic lobe; dh, distal or lower hooks of this lobe; el, lateral epiphallic lobes (those forming epiphallic ectoparameres in Dolichogryllus generic group and Truljalia); g, guiding rod; 2e, second ectoparameres (guiding rod processes which probably not homologous in Dolichogryllus and Madasumma).

4 184 A.V. Gorochov: Taxonomy of Podoscirtinae. Part 4 ZOOSYST. ROSSICA Vol. 13 Figs II (1-9). Dolichogryllus, male. 1, D. infuscatus Chop. (from Chopard, 1967); 2-9, D. camerunensis Bol. (lectotype). General view (1) and head (2) from above; head and pronotum from side (3); inner tympanum (4); dorsal part of tegmen (5); metanotal gland (6); genital (7, 8) and anal (9) plates from below (7), from side (8), and from above (9). Afrotruljalia tshetyrkinae (Gorochov, 1988), comb. n. (Figs III: 1, 2; IV: 1-3; V: 1-6) Holotype. M, Kenya [other data unknown] (ZIAS). Note. The holotype is sufficiently described (Gorochov, 1988). In addition, it is necessary to indicate the following features: the size is not large for this genus; general coloration is not dark (from light brown to greyish brown), weakly spotted; the head and pronotum are not very long; all ocelli are developed and not very small (Figs III: 1, 2); inner tympanum is rather long and very narrow (Figs IV: 2); metanotal gland absent; the tegmina with 3 longest oblique veins not arched and almost parallel (Fig. IV: 1); the apex of geni-

5 ZOOSYST. ROSSICA Vol. 13 A.V. Gorochov: Taxonomy of Podoscirtinae. Part Figs III (1-16). Afrotruljalia, male. 1, 2, A. tshetyrkinae (Gor.) (holotype); 3, 4, A. pulla sp. n.; 5, 6, A. kevani sp. n.; 7, 8, A. ethiopica (Gor.) (holotype); 9, 10, A. grisea (Chop.); 11, 12, A. corticea (Chop.); 13, 14, A. uvarovi sp. n.; 15, 16, A. magnifica sp. n. Head and pronotum from above (1, 3, 5, 7, 9, 11, 13, 15); head, anterior view (2, 4, 6, 8, 10, 12, 14, 16). tal plate is supplied with a moderately deep notch (intermediate between those in Figs IV: 11 and 18); the genitalia (Figs V: 1-6) are with a bifurcated proximal sclerite of the mold of spermatophore attachment plate (Figs V: 2, 5). Female of this species is unknown. Length (mm). Body 17; body with wings 24; pronotum 2.6; tegmina 16.5; hind femora 11. Afrotruljalia pulla sp. n. (Figs III: 3, 4; IV: 4, 5; V: 7, 8; VIII: 12) Holotype. M, Tanzania, D. O. Afrika, Brandes (MNHU). Description. Male (holotype). Very similar to A. tshetyrkinae, but different in following characters: coloration much darker (frons un-

6 186 A.V. Gorochov: Taxonomy of Podoscirtinae. Part 4 ZOOSYST. ROSSICA Vol. 13 Figs IV (1-20). Afrotruljalia. 1-3, A. tshetyrkinae (Gor.) (holotype); 4, 5, A. pulla sp. n.; 6, 7, A. kevani sp. n.; 8, 9, A. ethiopica (Gor.) (holotype); 10, 11, A. grisea (Chop.); 12, 13, A. magnifica sp. n.; 14, A. uvarovi sp. n.; 15, 16, A. corticea (Chop.); 17-20, A. sordidula sp. n. (17, 18, holotype). Dorsal part of male tegmen (1, 4, 6, 8, 10, 12, 14, 15); inner tympanum (2, 5, 7, 9, 16, 17); male anal plate from above (3); apex of male genital plate from below (11, 18); rudiment of metanotal gland (13); female genital plate from below (19); apical part of ovipositor from side (20).

7 ZOOSYST. ROSSICA Vol. 13 A.V. Gorochov: Taxonomy of Podoscirtinae. Part der antennal cavities almost black; see Figs III: 3, 4), inner tympanum distinctly widened (Fig. IV: 5), tegmina with slightly longer mirror and only two longest oblique veins not arched and more or less parallel (Fig. IV: 4), and genitalia with stripe-like proximal sclerite of mold of spermatophore attachment plate (Fig. V: 7). Distinctions between holotypes of both species in shape of guiding rod plates (Figs V: 6 and 8) are within infraspecific variability of A. ethiopica (Figs V: 13-15). Female unknown. Length (mm). Body 16.5; body with wings 23; pronotum 2.5; tegmina 16; hind femora Comparison. The distinctions from A. tshetyrkinae are listed above. From A. grisea, this species differs in the darker coloration, distinctly wider tegminal mirror, two longest oblique veins more or less parallel, and less hooked dark sclerite at the base of guiding rod (for comparison, see Figs V: 3 and 16; in A. pulla, the genitalia are almost identical to those of A. tshetyrkinae pictured in the former figure). From A. ethiopica, A. pulla is distinguished by the different coloration and well-developed median ocellus. Afrotruljalia kevani sp. n. (Figs III: 5, 6; IV: 6, 7; V: 9-11) Holotype. M, Kenya, Finno, Mandora Dist., Kenya, 17.VI.1944, D.K. Kevan Coll., Desert Grass & Thorn- Bush, Lat. 03º28 N, Long. 41º28 E (BMNH) [identified by Kevan as Dolichogryllus griseus]. Description. Male (holotype). Similar to A. tshetyrkinae in coloration, but slightly lighter (Figs III: 5, 6). Structure of head and pronotum as in A. tshetyrkinae and A. pulla, but median ocellus very small. Inner tympanum distinctly narrower than in A. pulla and much shorter than in both above-mentioned species (Fig. IV: 7). Tegmina with oblique veins almost as in A. pulla, but their mirror slightly wider than in both these species and with dividing vein situated mostly in its distal half (Fig. IV: 6). Other structures of body as in these species, but genitalia (Figs V: 9-11) with less distinct hooks at apex of upper epiphallic lobe and with proximal sclerite of mold of spermatophore attachment plate similar to that of A. pulla. Female unknown. Length (mm). Body 16; body with wings 23; pronotum 2.3; tegmina 15.5; hind femora Comparison. The distinctions from A. tshetyrkinae and A. pulla are mentioned above. From A. grisea and A. ethiopica, the new species differs in the same characters as A. pulla. Etymology. This species is named in memory of the collector, Canadian orthopterist Prof. D.K. McE. Kevan. Afrotruljalia ethiopica (Gorochov, 1990), comb. n. (Figs III: 7, 8; IV: 8, 9; V: 12-15) Holotype. M, Ethiopia, Gambela (Illubabor) Prov., 25 km W of Abobo, Alwero River, at light, 10.XII.1986, L.B. Rybalov (ZIAS). Other material examined. Somalia: 1 M, B. Somaliland, Aware Haud, 8.V.1953, E. J. Van Ingen (BMNH). Kenya: 1 M, Birchika, Mandora Dist., Kenya, 1.XII. 1944, D.K. Kevan Coll., Desert Grass & Thorn-Bush, Lat. 03º57 N, Long. 41º38 E (BMNH) [identified by Kevan as Dolichogryllus griseus]. Note. The holotype of this species is sufficiently described (Gorochov, 1990). A. ethiopica is similar to three above-considered species, but it is distinguished from these by the more contrasting coloration with almost black spots between eyes and on pronotal disc (Fig. III: 7; some variability is present in the coloration of frons: it looks as in Fig. III: 8 or almost as in Figs III: 2, 6), the absence of median ocellus, somewhat more pubescent legs, long and distinctly widened inner tympanum (wider than in A. pulla) (Fig. IV: 9), tegminal venation almost as in A. tshetyrkinae (Fig. IV: 8), and the male genitalia (Figs V: 12-15) with proximal sclerite of the mold of spermatophore attachment plate as in A. pulla and A. kevani. This species has a certain variability in the structure of the apex of upper epiphalic lobe (as in Fig. V: 12, almost as in Fig. V: 4, or approximately as in Fig. V: 9) as well as in the shape of epiphallic ectoparameres (as in Fig. V: 12 or almost as in Figs V: 4, 9) and guiding rod plates (Figs V: 13-15). Female of this species is unknown. Length (mm). Body 17-19; body with wings 25-27; pronotum ; tegmina 17-19; hind femora 12 (hind legs of slightly smaller specimens from Somalia and Kenya missing). Afrotruljalia grisea (Chopard, 1932), comb. n. (Figs III: 9, 10; IV: 10, 11; V: 16) Material. Kenya: 1 M, Thurner McArthur, Lower Tana Sabaki, April-May 1932 (BMNH) [identified by Townsend as Dolichogryllus griseus]. Note. This specimen was collected in environs of the Tana River. The type locality of A. grisea is environs of Bura (Chopard, 1932), a town that is situated at the same river. This species is rather similar to all above-considered species of Afrotruljalia, but it differs in the following characters: the coloration is rather light and slightly spotted (from brownish grey to whitish), without large darkenings between eyes, but with dark ornament on the pronotum similar to that of A. ethiopica (Figs III: 9, 10); the ocelli are almost as in A. kevani; the legs are pubescent as in A. ethiopica; the tegmina are with distinctly narrower mirror, much wider cell near its medial edge, and two

8 188 A.V. Gorochov: Taxonomy of Podoscirtinae. Part 4 ZOOSYST. ROSSICA Vol. 13 Figs V (1-19). Afrotruljalia, male. 1-6, A. tshetyrkinae (Gor.) (holotype); 7, 8, A. pulla sp. n.; 9-11, A. kevani sp. n.; 12-15, A. ethiopica (Gor.) (12, 13, holotype); 16, A. grisea (Chop.); 17-19, A. sordidula sp. n. (holotype). Genitalia in rest position from above (1, 17), from below (2, 18), and from side (3, 19); distal part of epiphallus and ectoparameres from above (4, 9, 12); proximal sclerotized area of mold of spermatophore attachment plate on ventral surface of genitalia (5, 7); sclerotized plate on inner surface of lateral membranous lobes of guiding rod in rest position from side (6, 8, 11, 13-15); distal half of genitalia with erected guiding rod (and with ventral position of its sclerotized plates) from below (10) and in rest position from side (16). longest not arched oblique veins which are more distinctly divergent than in all above-considered species (Fig. IV: 10); the genital plate is supplied with a rather small apical notch (Fig. IV: 11); the genitalia are with the apical parts of upper epiphallic lobe and epiphallic ectoparameres almost as in Fig. V: 4, proximal sclerite of the mold of spermatophore attachment plate similar to that

9 ZOOSYST. ROSSICA Vol. 13 A.V. Gorochov: Taxonomy of Podoscirtinae. Part in Fig. V: 7, and sclerotized dark sclerite at the base of guiding rod smaller and distinctly more hooked (Fig. V: 16). The structure of inner tympanum of A. grisea is uncertain, as fore legs of the specimen examined are missing. From the first description it is possible to understand only that this tympanum is slit-like (Chopard, 1932). Female of this species is unknown. Length (mm). Body 18; body with wings 24.5; pronotum 2.5; tegmina 17; hind femora Afrotruljalia corticea (Chopard, 1934), comb. n. (Figs III: 11, 12; IV: 15, 16). Material. Uganda: 1 M, van Someren, Ewamba (H), Uganda, 3.48, V.G.L. van Someren Collection (BMNH). Description. Male (nov.). Body somewhat longer than in all above-considered species. Pubescence of body well developed. Coloration more or less similar to that of A. grisea, but slightly darker (from light brownish to brownish grey) and with pair of distinct dark longitudinal stripes from antennal cavities to hind edge of pronotum (Figs III: 11, 12). Head and pronotum distinctly longer than in all previous species (almost as in Fig. VIII: 11); rostrum between antennal cavities somewhat narrower; lateral ocelli smaller, median ocellus absent; pronotal lateral lobes slightly narrower than in all previous species. Inner tympanum slit-like and very small (Fig. IV: 16), almost as in A. kevani. Metanotal gland absent. Apex of genital plate with rather deep notch, almost as in Fig. IV: 18. Genitalia distinguished from all species considered above by thin epiphallic ectoparameres provided with hooked apex, much longer guiding rod with lateral lobes directed laterally in rest position and without ventral sclerotized plates, characteristic shape of hook-like dark sclerite at base of guiding rod, presence of additional semimembranous plates on outer surface of this rod, and shorter rami (genitalia of this specimen almost identical to those in Figs V: 17-19). Female (after Chopard, 1934: Fig. 32). Similar to male in coloration and shape of body, but distinctly larger. Very similar to female of A. sordidula sp. n. (see below) in general appearance, but distinguished from it by much smaller inner tympanum and slightly shorter ovipositor. Length (mm). Body: M 22, F 21; body with wings: M 28, F 33; pronotum: M 2.7, F 3.8; tegmina: M 19.5, F 24.5; hind femora: M 13, F 17.5; ovipositor 26. Note. The examined specimen was collected in Uganda. The type locality of A. corticea is environs of Mahagi (Zaire, Ituri), a town near the frontier between Zaire and Uganda. Afrotruljalia sordidula sp. n. (Figs IV: 17-20; V: 17-19) Holotype. M, Tanzania, Lindi (ZIAS). Paratypes. Tanzania: 1 F, with same data as for holotype (ZIAS). Mozambique: 1 M, Kionga, Reimer, III- VI.99 (MIZP). Description. Male (holotype). Very similar to A. corticea in shape of body, pubescence, coloration, and structure of metanotum, wings, and abdominal apex (Figs IV: 18; V: 17-19), but clearly distinguished from it by shape of inner tympanum which large and strongly widened (almost not slitlike; for comparison, see Figs IV: 16 and 17). Variation. Slight darkenings on cells of dorsal tegminal part distinct in holotype and rather indistinct in paratype. Female. Similar to male in general appearance, but much larger. Tegmina with numerous and slightly irregular crossveins; coloration of lateral and dorsal tegminal parts grey, rather light, but with following elements: brown colour of all longitudinal veins, some of crossveins in dorsal part, and spots on cells of this part, whitish colour of all crossveins in lateral part and of numerous crossveins in dorsal part, dark brown band along upper edge of lateral part (interrupted by whitish crossveins), and transparent intercalary triangle. Genital plate as in Fig. IV: 19; ovipositor very long; its apex drilling and provided with numerous small denticles (Fig. IV: 20). Length (mm). Body: M 21-22, F 28; body with wings: M 28-30, F 38; pronotum: M , F 3.8; tegmina: M 20-21, F 26; hind femora: M 14, F 17.5; ovipositor 28. Comparison. A. sordidula differs from A. corticea in the much wider inner tympanum, and from all other known species of Afrotruljalia, in the characteristic general appearance and structure of the male genitalia. Afrotruljalia uvarovi sp. n. (Figs III: 13, 14; IV: 14; VIII: 11) Holotype. M, Tanzania, Tanganyika T., Morogoro, , J.A.J. Thompson (BMNH) [identified as Madasumma sp. nov. by Uvarov and as Dolichogryllus corticeus by Townsend]. Description. Male (holotype). Very similar to A. corticea and A. sordidula in shape of body (Fig. VIII: 11), pubescence, structure of metanotum and abdominal apex (including genitalia), but distinguished by following characters: coloration lighter (from light brown to greyish), with narrower darkish stripes on head and pronotum (Figs III: 13, 14), and almost without distinct darkenings on tegmina and legs; inner tympanum almost as in A. sordidula (not as in A. corticea; see Figs IV: 16 and 17); legs distinctly longer, hind femora 5.7 times as long as pronotum (in

10 190 A.V. Gorochov: Taxonomy of Podoscirtinae. Part 4 ZOOSYST. ROSSICA Vol. 13 males of A. corticea and A. sordidula, this ratio ); tegmina also longer (especially apical area), with slightly narrower dorsal part (for comparison see Figs IV: 14 and 15). Female unknown. Length (mm). Body 24; body with wings 32; pronotum 2.9; tegmina 23; hind femora Comparison. The distinctions of A. uvarovi from A. corticea and A. sordidula are listed above. From all previously-considered congeners, the new species differs in the more elongate shape of body and the distinctly different male genitalia (almost as in Figs V: 17-19). Etymology. The species is named in memory of famous orthopterist Prof. B.P. Uvarov who first supposed that this specimen belongs to a new species. Afrotruljalia magnifica sp. n. (Figs III: 15, 16; IV: 12, 13; VI: 1-3) Holotype. M, Tanzania, D.O.-Afrika, Tanga, A. Karasek S. (MNHU). Description. Male (holotype). Size rather large for this genus. Shape of body (including head and pronotum) more similar to that of A. tshetyrkinae, A. pulla, A. kevani and A. ethiopica than to that of A. corticea, A. sordidula and A. uvarovi. Coloration rather dark: body and legs dark brown with more or less light brown ornament and whitish large paired spots on pronotum (Figs III: 15, 16); tegmina light greyish brown with wide brown band along tegminal bend, dark spots between proximal parts of Sc branches and along middle part of anal tegminal edge, and smaller darkish spots on dorsal tegminal part (numerous spots on basal area and mirror, sparse ones on other parts of stridulatory areas and on apical area); hind wings brownish grey. Legs with moderate pubescence; hind femora clearly thicker than in all previous congeners (structure of tympana unknown as fore legs missing). Tegminal dorsal part as in Fig. IV: 12. Metanotal gland rudimentary (Figs IV: 13). Structure of abdominal apex similar to that of all other congeners, but genital plate with apical part intermediate between those in Figs IV: 11 and 18; genitalia (Figs VI: 1-3) with epiphallic ectoparameres of characteristic shape and guiding rod more similar to that in first species group (A. tshetyrkinae and others) than to that in second one (A. corticea and others). Female unknown. Length (mm). Body 24; body with wings 31; pronotum 3.7; tegmina 21.5; hind femora Comparison. This species is clearly distinguished from all other congeners by the characteristic structure of the male genitalia (see the paragraph about composition of the genus Afrotruljalia). Genus Hemitruljalia gen. n. Type species: Hemitruljalia rufula sp. n. Diagnosis. Body not depressed dorsoventrally. Head rostrum not acute-angled in profile (Fig. VIII: 13); ocelli well developed, but comparatively small (Figs VII: 1, 5). Pronotum rather short, without dorsal folds (Figs VII: 1, 5; VIII: 13). Fore tibiae not inflated; outer tympanum absent; inner tympanum slit-like, but more or less short and widened (Figs VII: 3, 6); hind femora distinctly thickened. Male metanotal gland well developed, consisting of large cavity provided with small median transverse fold (Fig. VII: 2). Wings long, with partly reduced stridulatory apparatus in male (Fig. VII: 4). Male anal plate simple, similar to that of both previous genera; genital plate also as in these genera (see Figs IV: 19; VII: 8), in male with deep apical notch (almost as in Fig. IV: 18). Male genitalia similar to those of Afrotruljalia, but bases of lateral epiphallic lobes near epiphallic ectoparameres not triangular, and paired sclerotized stripes on ventral surface of guiding rod much shorter (Figs VI: 4-6). Ovipositor well developed, long, with drilling apex. Included species. Type species and H. viridula sp. n. Comparison. This genus is distinguished from all known genera of Dolichogryllus generic group by the structure of ocelli, tympana, male metanotum, hind femora, male tegmina, and the male genitalia (the male genitalia of Hemitruljalia differ from those of Afrotruljalia in the characters listed above and from those of Dolichogryllus, in the much smaller hooks of upper epiphallic lobe and somewhat widened bases of lateral epiphallic lobes near epiphallic ectoparameres). Hemitruljalia rufula sp. n. (Figs VI: 4-6; VII: 1-4) Holotype. M, Kenya, Kilifi near Mombasa, IX.1967, D. Klements (ZIAS). Description. Male (holotype). Coloration reddish yellow with lighter (yellowish) antennal flagellum and dorsal part of tegmina, brownish upper part of head (with slightly darker longitudinal lines) and ornament on pronotal disc (Fig. VII: 1), and brownish red (somewhat darkened) band on lateral tegminal part along its upper edge. Metanotal gland as in Fig. VII: 2. Inner tympanum small; its shape as in Fig. VII: 3. Dorsal part of tegmina with developed chords and partly reduced mirror (Fig. VII: 4); hind wings much longer than tegmina. Genital plate with deep apical notch, almost as in Fig. IV: 18; genitalia as in Figs VI: 4-6.

11 ZOOSYST. ROSSICA Vol. 13 A.V. Gorochov: Taxonomy of Podoscirtinae. Part Figs VI (1-11). Male. 1-3, Afrotruljalia magnifica sp. n.; 4-6, Hemitruljalia rufula sp. n.; 7-9, Acrophonus stenus sp. n.; 10, A.? bicolor (Chop.) (from Chopard & Baccetti, 1968); 11, Pachyaphonus bicolor Chop. (from Chopard, 1954). Genitalia in rest position (1-6) and with guiding rod possibly erected (7-9): from above (1, 5, 7), from below (2, 4, 8), and from side (3, 6, 9); distal half of genitalia from above (10, 11). Female unknown. Length (mm). Body 16.3; body with wings 20; pronotum 2.7; tegmina 14; hind femora Hemitruljalia viridula sp. n. (Figs VII: 5-8; VIII: 13) Holotype. F, Kenya, Diani Beach, 22.IV.1941, W.J. Bailey (BMNH). Description. Female (holotype). Coloration yellowish green with brownish grey upper part of head, almost dark brown stripes on vertex and ornament on pronotal disc (Fig. VII: 5), and light brownish (almost yellowish) dorsal tegminal part provided with slightly darkened stripe along lateral edge of dorsal tegminal part and small sparse whitish spots on hind part of this stripe. Inner tympanum somewhat larger than in H. rufula (for

12 192 A.V. Gorochov: Taxonomy of Podoscirtinae. Part 4 ZOOSYST. ROSSICA Vol. 13 Figs VII (1-15). Hemitruljalia, Acrophonus and Pachyaphonus. 1-4, H. rufula sp. n.; 5-8, H. viridula sp. n.; 9, A. jeanneli (Chop.) (from Chopard, 1932); 10-13, A. stenus sp. n.; 14, 15, P. murzini sp. n. Head and pronotum from above (1, 5, 10); male metanotal gland (2, 12); inner tympanum (3, 6, 13, 14); dorsal part of male tegmen (4, 11); apex of ovipositor from side (7); female genital plate from below (8, 15); general view from above (9). comparison, see Figs VII: 3 and 6). Dorsal part of tegmina with 11 almost parallel and slightly oblique longitudinal veins; crossveins of this part not sparse and rather regularly arranged. Genital plate and apex of ovipositor as in Figs VII: 7, 8. Male unknown. Length (mm). Body 16; body with wings 26.5; pronotum 3.5; tegmina 18.5; hind femora 13; ovipositor 14. Comparison. The new species differs from H. rufula in the following characters: greenish (not reddish) general coloration, more contrasting dark ornament on the head and pronotum, ab-

13 ZOOSYST. ROSSICA Vol. 13 A.V. Gorochov: Taxonomy of Podoscirtinae. Part sence of darkened band on lateral tegminal part along its upper edge, and the larger inner tympanum of fore tibiae. Genus Acrophonus Bolívar, 1910 Type species: Acrophonus humeralis Bolívar, Notes. Bolívar (1910) probably considered that the most remarkable character of Acrophonus is partly reduced male stridulatory apparatus (without mirror, but with distinct stridulatory vein). Chopard (1934) included in this genus three species [type species (Equatorial Guinea: Cabo San Juan); Aphonus ocellaris Saussure, 1878 (Tanzania: Zanzibar; possibly, Zaire: Kalemi = Albertville); Acrophonus validus Chopard, 1934 known only from female (Zaire: Katanga)] taking as a basis the above-mentioned character and the presence of only inner tympanum. Later, he included in Acrophonus an additional species [Podoscirtus jeanneli Chopard, 1932, Tanzania (Tanga)], characterized by the same characters (Fig. VII: 9), and transferred A. ocellaris to the genus Aphonoides Chop. (Chopard, 1968). However, Aphonoides belongs to another tribe of Podoscirtinae, Aphonoidini, which is not registered from Africa and adjacent islands with confidence, and some important characters of A. ocellaris (very large ocelli and presence of any stridulatory apparatus) are unknown in this tribe. Moreover, these two characters are present in a new species with the male genitalia typical of Dolichogryllus generic group (Figs VI: 7-9). Structure of ocelli in A. humeralis and A. validus is unstudied, and it is quite possible that these species are not related to A. ocellaris, A. jeanneli and A. stenus sp. n., as structure of tympanal organs and male tegmina may be similar because of convergence. Nevertheless, these five species are formally included here in the same genus. The sixth species that is possibly related to aboveconsidered ones or to some of these is Madasumma bicolor Chopard & Baccetti, 1968 (Somalia: Ola Uager), as it has large ocelli, slightly reduced male stridulatory apparatus, only inner tympanum on each fore tibia, and the male genitalia similar to those of Dolichogryllus generic group (Fig. VI: 10). Acrophonus stenus sp. n. (Figs VI: 7-9; VII: 10-13; VIII: 14) Holotype. M, Tanzania, Daressalam, Brzozowski (MNHU). Description. Male (holotype). Body almost not depressed dorsoventrally (Fig. VIII: 14). Coloration (Fig. VII: 10) comparatively light, almost uniformly brownish grey, but with several distinctly lighter (yellowish) elements [lower part of head, edges of ocelli, two longitudinal stripes behind each eye, lateral lobes of pronotum, proximal part of legs, stripe along tegminal bend (between R and M), and lower part of thorax and abdomen], and darker (brown) pattern [short stripe along anterior part of upper edge of each pronotal lobe, veins of proximal half of tegminal dorsal part (including R and M), small and very sparse spots on dorsal part of tegmina, small spot on upper surface of each hind tibia not far from its base, and middle parts of hind tibiae excepting their spines]. Head rostrum narrow (Fig. VII: 10), not acute-angled in profile, with slightly concave upper surface (Fig. VIII: 14); ocelli very large, weakly convex, partly fused with each other (Fig. VII: 10). Pronotum rather short, narrowed to head, without transverse folds, and with short and round median projection of hind edge of disc (Figs VII: 10; VIII: 14). Fore tibiae not inflated, with only inner tympana which small and slitlike (Fig. VII: 13); hind femora thickened, almost as in Hemitruljalia. Metanotal gland more or less similar to that of Hemitruljalia, but somewhat reduced (Fig. VII: 12). Wings long; tegminal dorsal part as in Fig. VII: 11; tegminal lateral part with parallel, almost longitudinal, weakly curved branches of Sc and rather sparse, regular crossveins between them; hind wings much longer than tegmina. Anal and genital plates similar to those of H. rufula, but apical notch of genital plate slightly shallower; genitalia as in Figs VI: 7-9. Female unknown. Length (mm). Body 16; body with wings 22; pronotum 2.4; tegmina 16; hind femora 9.2. Comparison. A. stenus differs from A. ocellaris in the partly brownish ocelli (in A. ocellaris, they are entirely whitish), not angular hind edge of pronotal disc, and the longer hind femora (in A. stenus, hind femur is 3.8 times as long as the pronotum; in A. ocellaris this ratio is 3.5). From A. jeanneli, the new species differs in the narrower head rostrum and dorsal part of tegmina (for comparison, see Figs VII: 9-11). From A. validus, this species differs in the more uniform coloration, and from A. humeralis, it is distinguished by the shorter pronotum and hind femora as well as the longer tegmina. Genus Pachyaphonus Chopard, 1954 Type species: Pachyaphonus bicolor Chopard, Note. This genus is similar to Acrophonus in the very large ocelli (Figs VII: 10; VIII: 1). These genera differ from each other in the structure of male tegmina: in Pachyaphonus, tegmina are completely lacking the stridulatory apparatus (Fig. VIII: 3), whereas in Acrophonus, it is present in more or less reduced state. However, the above

14 194 A.V. Gorochov: Taxonomy of Podoscirtinae. Part 4 ZOOSYST. ROSSICA Vol. 13 differences are insufficient for separation of these genera from each other. Moreover, the male genitalia in Pachyaphonus and in some species of Acrophonus are similar to those of other representatives of Dolichogryllus generic group (Figs VI: 7-11). It is not improbable that Pachyaphonus and Acrophonus are synonyms or subgenera of the same genus. However, to solve this problem more definitely, it is necessary to examine their type species. Included species. Type species (eastern part of Guinea) and P. murzini sp. n. Pachyaphonus murzini sp. n. (Figs VII: 14, 15; VIII: 1, 2) Holotype. F, Guinea, western part, environs of Kindia, forest near Tabuna River, 28.X-1.XI.1983, S. Murzin (ZIAS). Description. Female (holotype). Body almost not depressed dorsoventrally (Fig. VIII: 2). Coloration brown with several dark brown elements [upper part of head, characteristic ornament on pronotal disc (Fig. VIII: 1), spots on the most basal part of tegmina, and small spots on upper surface of hind tibiae (not far from their bases and around bases of spines)], several light brown ones [lower part of head, antennal flagellum, lateral lobes of pronotum, legs, lateral part of tegmina, and lower part of thorax and abdomen], and yellowish (very light) ocelli and narrow stripe along tegminal bend (between R and M). Rostrum of head somewhat wider than in A. stenus (see Figs VII: 10; VIII: 1) and almost without concavity on its upper surface (Fig. VIII: 2); structure of ocelli almost as in A. stenus (Fig. VIII: 1). Pronotum moderately short, with almost parallel lateral sides, without transverse folds, and with hind projection of disc as in Fig. VIII: 1. Fore tibiae not inflated, with only inner tympana which short and narrow (distinctly slit-like) (Fig. VII: 14); hind femora almost as in A. stenus. Tegmina long, similar to those in male of P. bicolor (Fig. VIII: 3); hind wings damaged. Genital plate as in Fig. VII: 15; ovipositor rather long, with drilling apex. Male unknown. Length (mm). Body 15; body with tegmina 19; pronotum 3; tegmina 13.5; hind femora 11; ovipositor Comparison. The new species differs from P. bicolor in the distinctly darker upper part of head and ornament on pronotal disc, narrow inner tympanum (in A. bicolor, it is round), and hind tibiae with middle inner spur clearly shorter than upper inner one. Genus Pseudotruljalia gen. n. Type species: Pseudotruljalia speciosa sp. n. Diagnosis. Body weakly depressed dorsoventrally (Fig. VIII: 15). Head rostrum narrow, acuteangled in profile, strongly projected anteriorly (Fig. VIII: 15), with angular apex as seen from above (Fig. IX: 2); ocelli reduced: very small or absent. Tympanal part of fore tibiae strongly inflated; outer tympanum open and almost round; inner tympanum slit-like, rather long (Fig. IX: 4); hind femora fairly slender. Male metanotal gland well developed, with characteristic structure of hind part (Fig. IX: 5). Wings long; male tegmina with well-developed stridulatory apparatus and rather large mirror (Fig. IX: 3); hind wings much longer than tegmina. Anal and genital plates in male similar to those in previous genera of Dolichogryllus generic group, but apex of genital plate with very small apical notch (slightly smaller than in Fig. IV: 11); male genitalia with long upper epiphallic lobe, very short apical hooks of this lobe, rather short epiphallic ectoparameres, narrow base of lateral epiphallic lobes, and large membranous windows between epiphallic lobes and their ectoparameres (Figs XI: 1-3). Included species. Type species and, possibly, Dolichogryllus nigronotatus Chopard, 1934 (Zaire: Lubumbashi = Elisabethville). Comparison. This genus differs from all other genera of Dolichogryllus generic group in the characteristic structure of head rostrum, ocelli, fore tibiae, male matanotal gland, male tegmina, and the male genitalia (shorter epiphallic ectoparameres, narrow base of lateral epiphallic lobes, and larger windows between these ectoparameres and lobes). Pseudotruljalia speciosa sp. n. (Figs VIII: 15; IX: 2-5; XI: 1-3) Holotype. M, Cameroon, Kamerun, Hinterland, Jaunde-Stat., Zenker S. (MNHU). Description. Male (holotype). Coloration rather contrasting: head brownish yellow with darker (brown) parts behind eyes (crossed by narrow longitudinal yellow stripes), transverse band on hind part of vertex, small spots on membrane of upper part of antennal cavities, on lateral part of scape, and on outer side of apical segments of maxillary palpi, slightly darkened genae under eyes, a pair of strokes on lower part of rostrum between antennal cavities, and rather indistinct stripe along clypeal suture (Figs VIII: 15; IX: 2); pronotum with brownish yellow disc and dark brown lateral lobes; pronotal disc with blackish round spot at centre and weakly distinct darkish ornament (Fig. IX: 2); pronotal lateral lobes with hardly lighter (brown) central part and light brown narrow anterior, interior, and posterior edges (Fig. VIII: 15); fore coxae light brown with

15 ZOOSYST. ROSSICA Vol. 13 A.V. Gorochov: Taxonomy of Podoscirtinae. Part Figs VIII (1-15). 1, 2, Pachyaphonus murzini sp. n.; 3, P. bicolor Chop. (from Chopard, 1954); 4, 5, Eumadasumma?lucens Chop.; 6, Depressotrella minuta sp. n.; 7, 8, D. modulata sp. n. (holotype); 9, D. testata sp. n.; 10, Homalotrypus boromensis Brancs. (from Brancsik, 1895); 11, Afrotruljalia uvarovi sp. n.; 12, A. pulla sp. n.; 13, Hemitruljalia viridula sp. n.; 14, Acrophonus stenus sp. n.; 15, Pseudotruljalia speciosa sp. n. Head and pronotum from above (1, 4, 6, 7, 9) and from side [2, 5, 8, (2, 10-14, coloration not depicted)]; general view from above (3).

16 196 A.V. Gorochov: Taxonomy of Podoscirtinae. Part 4 ZOOSYST. ROSSICA Vol. 13 Figs IX (1-10). 1, Pseudotruljalia? nigronotata (Chop.) (from Chopard, 1934); 2-5, P. speciosa sp. n.; 6-8, Calyptotrypus? petersi Sauss. (holotype); 9, Paraphasius lepturoides Chop. (from Chopard, 1927); 10, Eumadasumma?lucens Chop. General view of male from above (1, 9); head and pronotum from above (2); dorsal part of male right tegmen (3); inner side of fore tibia (4) and of its proximal half (6); male metanotal gland (5, 10); apex of ovipositor from below (7) and from side (8). dark brown outer part; fore femora dark brown with light brown base and longitudinal stripe on lower side; middle and hind coxae light brown; middle and hind femora reddish brown with lighter base and dark brown distal part; all tibiae and tarsi dark brown; tegmina almost transparent (slightly greyish), but with brown veins [some of them dark brown: two anal chords, veins in basal area and along tegminal bend, some veins around distal half of mirror (Fig. IX: 3), and proximal parts of Sc branches]; hind wings, lower part of thorax and abdomen, and cerci light brownish; upper part of pterothorax and abdomen darker (brown). Eyes very large; ocelli absent. Pronotum moderate in length, distinctly narrowed to head, with sharp bend between disc

17 ZOOSYST. ROSSICA Vol. 13 A.V. Gorochov: Taxonomy of Podoscirtinae. Part Figs X (1-12). Eumadasumma, Homalotrypus and Depressotrella, male. 1-3, E.?lucens Chop.; 4, H. boromensis Brancs. (from Brancsik, 1895); 5-7, D. modulata sp. n. (holotype); 8, 9, D. testata sp. n.; 10-12, D. minuta sp. n. Head, anterior view (1, 5, 8, 10) (1, coloration not depicted); inner side of proximal half of fore tibia (2, 6, 11); dorsal part of right tegmen (3, 4, 7, 9, 12). and lateral lobes as well as with distinct small concavity at centre of disc (this concavity blackish; Fig. IX: 3). Inner tympanum of fore tibiae rather long and narrow (Fig. IX: 4). Metanotal gland, venation of tegmina, and genitalia as in Figs IX: 3, 5 and XI: 1-3. Female unknown. Length (mm). Body 17; body with wings 26; pronotum 2.4; tegmina 18; hind femora 9.5. Comparison. P. speciosa is similar to P.? nigronotata, comb. n., in the coloration of the pronotum and venation of male tegmina (for comparison, see Figs IX: 1-3), but differs from the latter species in the larger eyes, absence of the ocelli (in P.? nigronotata, small lateral ocelli are present), the position of dark median spot located almost in the centre of pronotal disc (in its distal part in P.? nigronotata), the darker legs, and more inflated fore tibiae. Genus Eumadasumma Chopard, 1934 Type species: Eumadasumma lucens Chopard, Note. This genus is characterized by the following features: the body is strongly dorsoventrally depressed (head flattened and lateral pro-

18 198 A.V. Gorochov: Taxonomy of Podoscirtinae. Part 4 ZOOSYST. ROSSICA Vol. 13 Figs XI (1-10). Male. 1-3, Pseudotruljalia speciosa sp. n.; 4-7, Eumadasumma?lucens Chop.; 8, Depressotrella minuta sp. n.; 9, D. modulata sp. n. (holotype); 10, D. testata sp. n. Genitalia from above (1, 4), from below (2, 5) and from side (3, 6); genital plate from below (7-10). notal lobes low; Figs VIII: 5; X: 1); the head rostrum is rather narrow, not strongly projected anteriorly (Fig. VIII: 5), with almost angular apex as seen from above (Fig. VIII: 4); the ocelli are absent; the eyes are rather large (Figs VIII: 4, 5); each fore tibia has an open oval outer tympanum and slit-like inner one (Fig. X: 2); hind femora are comparatively thin; male metanotal gland is well developed, somewhat similar to that of Hemitruljalia (Fig. IX: 10); the wings are long; male stridulatory apparatus is well developed, with rather large mirror (Fig. X: 3); hind wings are much longer than tegmina; the anal and genital plates are of the same type as in the previous genera (Fig. XI: 7); the male genitalia are with a pair of small hook-like projections at the apex of upper epiphallic lobe; this lobe is long and almost parallel-sided; epiphallic ectoparameres are long and thick, provided with hooked apex; membranous windows between these ectoparameres and the bases of lateral epiphallic lobes are very narrow (Figs XI: 4-6); the ovipositor is very long, supplied with a drilling apex. Included species. Type species only. Eumadasumma?lucens Chopard, 1934 (Figs VIII: 4, 5; IX: 10; X: 1-3; XI: 4-7) Material. Zaire or Zambia: 1 M, Kipushi, N. Rhodesia, Silvester Evans, (ZIAS) [identified by Chopard(?) and Townsend as E. lucens]. Kenya: 1 F, Kenya: van Someren, Kaitir, 2.47, V.G.L. van Someren Collection (ZIAS) [identified by Townsend as E. lucens]. Note. The specimens were received from B. Townsend as an exchange between ZIAS and

19 ZOOSYST. ROSSICA Vol. 13 A.V. Gorochov: Taxonomy of Podoscirtinae. Part BMNH. These specimens and the holotype of this species (Tanzania) were collected in very distant localities of Africa; all have some differences in size and coloration and may belong to two or three very similar species. Coloration of the head and pronotum of the female from Kenya is given in Figs VIII: 4, 5; coloration of the male from Kipushi is very similar, but dark median stripe on pronotal disc is distinctly narrower and does not reach anterior and posterior edges of the pronotum. Some other structures are as in Figs IX: 10; X: 1-3; XI: 4-7. Length (mm). Body: M 22, F 21; body with wings: M 30, F 33; pronotum: M 2.9, F 3.2; tegmina: M 21, F 24; hind femora: M 11.8, F 12.7; ovipositor 24. Genus Depressotrella gen. n. Type species: Depressotrella modulata sp. n. Diagnosis. Similar to Eumadasumma in general appearance, but distinguished by following features: body more strongly depressed dorsoventrally (Figs VIII: 8; X: 5, 8, 10); head rostrum somewhat wider and with almost truncated apex as seen from above (Figs VIII: 6, 7, 9); eyes slightly larger; inner tympanum distinctly narrower (Figs X: 6, 11); male metanotal gland absent; in male tegmina, oblique veins longer, mirror larger, and apical area shorter (Figs X: 7, 9, 12); male genitalia with shorter upper epiphallic lobe narrowing to apex, slightly shorter epiphallic ectoparameres provided with upper spine-like process near apex, and longer proximal lobule at base of each lateral epiphallic lobe occupying most part of membranous windows between these bases and epiphallic ectoparameres (Figs XII). Included species. Type species, D. testata sp. n. and D. minuta sp. n. Comparison and note. This genus is closely related to the genus Eumadasumma, and, possibly, it is only a subgenus of Eumadasumma. The differences between these genera are listed above. From Homalotrypus Brancs., Depressotrella differs in the much smaller eyes and much larger mirror of male tegmina (for comparison, see Figs VIII: 8, 10; X: 4, 7, 9, 12). From all other genera of Dolichogryllus generic group, it is distinguished by the very depressed body, absence of the ocelli, presence of both (inner and outer) tympana, strongly-developed stridulatory apparatus in male tegmina, and characteristic structure of the male genitalia. Depressotrella modulata sp. n. (Figs VIII: 7, 8; X: 5-7; XI: 9; XII: 1-4) Holotype. M, Namibia, Okanhandja, S. W. Africa (MNHU). Paratypes. Namibia: 1 M, Damaraland, Ebony Mine a Khanfhiss, X.1885, A. Schenck S. (MNHU) [identified as Rupilius nigrosignatus]; 1 M, Deutsch S. W. Afrika, Gobabis, X.96, Borchmann S. (ZIAS) [identified as Xenogryllus Bol.]. Description. Male (holotype). Coloration yellowish with several dark brown elements [stripes and spots on upper part of head and pronotum (Fig. VIII: 7), parts of genae under and behind eyes, lower half of pronotal lobes (Fig. VIII: 8), and small spots on dorsal tegminal part] and several lighter (brown or brownish) elements [small spot under rostral apex, narrow stripes under antennal cavities and along clypeal suture (Fig. X: 5), two longitudinal stripes on eyes, spots at apex of scape and on basal part of flagellum, numerous small spots on legs, larger spots at apex of hind femora and at base of hind tibiae, upper surface of distal part of hind tibiae (excepting their spines), distal part of all tarsi, longitudinal veins of tegmina, rows of spots along median line of abdomen and along its lateral parts, and base of genital plate (Fig. XI: 9)]. Legs comparatively long, with very narrow inner tympanum (Fig. X: 6). Tegmina with dorsal part as in Fig. X: 7; their lateral part with numerous arched longitudinal veins and without crossveins. Genital plate and genitalia as in Figs XI: 9; XII: 1-4. Variation. Coloration of anterior part of head under rostral apex sometimes almost uniformly yellowish; tegminal membranes sometimes almost completely transparent. Female unknown. Length (mm). Body 17-20; body with wings 25-27; pronotum ; tegmina 19-21; hind femora 11. Depressotrella testata sp. n. (Figs VIII: 9; X: 8, 9; XI: 10; XII: 5-7) Holotype. M, Botswana or South Africa, Brit. S. W.- Afrika, L. Schultze S. (MNHU) [identified as Rupilius nigrosignatus]. Description. Male (holotype). Very similar to D. modulata, but distinguished by following characters: stripes and spots on upper part of head and pronotum less distinct, brown or brownish (Fig. VIII: 9); anterior part of head under eyes, antennal cavities, and rostral apex almost dark brown (Fig. X: 8); dark spots on other parts of body less distinct or smaller (Figs X: 9; XI: 10); dorsal part of tegmina with oblique veins almost parallel, chords shorter, mirror longer and narrower, and apical area longer (Fig. X: 9); genitalia with distinctly narrower bases of lateral epiphallic lobes and distal part of their ectoparameres; membranous windows between these bases and ectoparameres longer; proximal lobule of these bases distinctly longer (Figs XII: 5-7).